Ladder attachment.



C. H. POOL.

LADDER ATTACHMENT.

APPL lCATiON FILED MAR-22,1915 RENEWED SEPLZE. 191B- 1,288 182., I Patented Dec. 17, 1918.

2 SHEETS-SHEET ah 5W C. H. POOL.

LADDER ATTACHMENT.

APPLICATION FILED MAR.2Z.1916 RENEWED SEPLZS. [9H5- Patented Dec. 17, 1918.

2 SHEETSSHEET 2.

UNITED STATES PATENT OFFICE.

CHARLIE H. POOL, 0F SAVANNAH, GEORGIA.

LADDER ATTACHMENT.

Application filed March 22, 1916, Serial N 0. 86,023.

To all whom it may concern:

Be it known that I, CHARLIE H. PooL, a citizen of the United States, residing at Savannah, in the county of Ghatham and State of Georgia, have invented new and. useful Improvements in Ladder Attachments, of which the following is a specification.

This invention contemplates the provision of a ladder attachment in the nature of a shelf adapted to project horizontally from one rung of the ladder, in combination with an adjustable supporting means for the shelf whereby the latter can be maintained in a true horizontal position irrespective of the inclination at which the ladder is arranged.

The invention is very advantageous wherever use of a ladder is found necessary. The nature of .the invention will be better understood from the following description when taken in conneetionwith the accompanying drawings, the invention residing in the construction, combination and arrangement of, parts as claimed.

In the drawings forming part of this specification like numerals of reference indicate similar parts in the several views and wherein Figure 1 is a front elevation of the ladder showing the invention associated therewith.

Fig. 2 is a side elevation, showing two positions of the ladder.

Fig.3 is a detail view of one of the rung engaging members for the shelf.

Fig. 4 is a similar view of one of the adjustable sections of the rung engaging members disposed above the shelf.

Fig. 5 is a detailview of the slotted link providing a connection between the shelf and the supporting means therefor arranged beneath the shelf.

Before entering into a detail description of what is herein shown and described. I desire to have it understood that the same is merely illustrative of one embodiment of the invention to which I do not limit myself. and that such changes in the construction and arrangement of parts may be resorted to when desired as fall within the scope of what is claimed.

As shown in this particular instance. the device forming the subject matter of my invention consists of a pair of identically constructed rung engaging members 10. each being provided with a hook terminal 11 adapted to embrace the rung adjacent the Specification of Letters Patent.

Patented Dec. 17, 1918. Renewed September 28, 1918. Serial No. 256,144.

opposite edge thereof, the members projectmg horizontally from the ladder and formed ed from any suitable material and desired dimensions,1the shelf being secured to the members l0 in any suitable manner preferably by means of the screw bolts 15.

It is my purpose to provide an adjustable supporting means for the shelf whereby the latter at all times will maintain a horizontal position irrespective of the inclination at which the ladder is supported, and as shown in this instance use is made of a pair of vertically disposed rung engaging members disposed atthe opposite sides of the shelf and rising thereabove. Each of these mem bers comprises relatively adjustable sections 16 and 17 respectively, the latter being provided with an eye at its lower end for the reception of the extremities of the transverse bar 13, while the upper end of the section 16 terminates to provide a hook 18 adapted to engage one of the rungs of the ladder at a suitable distance above the shelf 14. Each of the sections have the major portion of their length disposed in face to face contact for sliding adjustment relatively, and are embraced by suitable guides 19 to hold the sections properly positioned during their adjustment. Each section is also formed at a point in its length with a shoulder 20 forming an abutment for the end of the other section to limit the adjust ment of the e parts to their normal p sition. A screw bolt 21 is carried by the section 16 and projects through a longitudinally disposed slot 22 in the section 17, and adjustablv associated with the bolt is a thumb nut 23 through the instrumentalitv of which the sections may be held fixed relatively in ad justed position. It is manifest that when the ladder is supported at the inclination shown in full lines in Fig. 2 the vertically disposed rung engaging members must be shortened to accommodate themselves to the latter to hold be support in horizontal posi Depending from the opposite end of the transverse bar 13 and pivotally associated therewith are auxiliary supporting arms 24: each being'provided with a relatively broad extremity 25 adapted to engage the side stiles of the ladder in active position. Embracing the extremities of the transverse bar 13 outwardly of the arms Mare collars 26 having associated therewith threaded bolts 27 adapted when screwed into engagement with the bar to hold the various parts of the adjustable supporting means fixed in operative position. The arms 24 adjacent their free ends are further supported .by means oi slotted links 28 depending from the sunnort 14 at the opposite sidesthereot' and pivotally associated therewith; The arms 24 carry threaded bolts 29 which project through the slot30 ofthe links 28 for'sliding ad ustment therein, the bolts providing a connection be tween the arms 2d and the links 28 whereby these parts are simultaneously adjusted to a position for use, a thumb nut 31 being associated with the bolts through the instrumentality of which the arms and links may be held fixed relatively in their proper adjusted position.

The construction of the device in its entirety is such that the various parts veanbe easily and quickly adjusted to their proper positionat the "bottom of the ladder, subsequent1to arranging the ladder at its proper inclination for use. The attachment can thensbe removed and carried by the workman up the ladder to the locationbdesired,

whereupon the rung engaging members can be easily hooked over the proper rungs.

' Theadjustment is very simple in "construction and when applied to a ladder has an unlimited number of uses and advantages.

It is obi 'ious'that the vertically disposed rung engaging members are adjustable independently of the supporting'elements depending from the support, whereby these various elements can be so positioned to elffectively and rigidly maintain the support 14: in a true horizontal position irrespective of the inclination at which the ladder is 'ar ranged, and permitting the attachment to be used in safety.

What is claimed is:-

l.- A ladder attachment comprising a pair of horizontally disposed rung engaging members, a platform resting upon and secured to said members, a transversely (118-.

posed rod passed through alined apertures in the forward extremities of said members, said rod projecting beyondthe outer longitudinal edges of saidmenibers, arms depending from the extremities of said rod and pivotally connected with'the latter, meansfor holding said arms at a given inclination, said arms having beveled extremitiesto engage the sidestiles of theladder, and adjustable elements connected with saidrod and adapted to engage one of the rungs o the ladder abovethe platform to hold the latter in a horizontal osition irrespective of the inclination of the ladder. I

A ladder attachment comprising "a pair of horizontally disposed rung engaging members, a. platform resting upon and 'secured to saidmembers, theforWard-extremr ties of saidinembersbeing formed -'to :provide bearings, a transversely disposedyrod arranged in said -bearings and having its extremities projecting beyond the sides of said members, adiustableelements connected. with the rod and adapted ito'engaee one of the rungs above theplatformtohold "the latter in a horizontal'iposition irrespective'of the inclination of the ladder, arms dependfrom the extreineities of said rod for swin ng movement, meansfor holdin said arms in a given position, said arms "having beveled extremities to restagainst theside stiles of the ladder, a slotted brace element dependin from each side of said platform in close roximity to the-=ladder and a 'pin carried by each arm and movable in'the' slot of the adiacent brace element, whereby said a ms and brace elements are adjusted in KATHRYN C. WARD, E. B. BERnmN;

Copies of this patent may be obtained for five cents each, by addressing the (lommissioner 3013 Patents, Washington. D. ll. 

